std::error_code::error_code

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std::error_code

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error_code::error_code
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error_code::value
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error_code()noexcept;	(1)	(since C++11)
error_code(int ec,const error_category& ecat)noexcept;	(2)	(since C++11)
template<class ErrorCodeEnum> error_code( ErrorCodeEnum e)noexcept;	(3)	(since C++11)
error_code(const error_code& other)=default;	(4)	(since C++11) (implicitly declared)
error_code( error_code&& other)=default;	(5)	(since C++11) (implicitly declared)

Constructs new error code.

1) Constructs error code with default value. Equivalent toerror_code(0,std::system_category()).

2) Constructs error code withec as the platform-dependent error code andecat as the correspondingerror category.

3) Constructs error code from an error code enume. Equivalent tomake_error_code(e), wheremake_error_code is only found byargument-dependent lookup. This overload participates in overload resolution only ifstd::is_error_code_enum<ErrorCodeEnum>::value istrue.

4,5) Implicitly defined copy constructor and move constructor. Initializes the error code with the contents of theother.

[edit]Parameters

other	-	another error code to initialize with
ec	-	platform dependent error code to construct with
ecat	-	error category corresponding toec
e	-	error code enum to construct with

[edit]Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 3629	C++11	only`std::make_error_code` overloads were used	ADL-found overloads are used

[edit]See also

make_error_code(std::errc) (C++11)	creates error code value for`errc` enume (function)[edit]
make_error_code(std::io_errc) (C++11)	constructs an iostream error code (function)[edit]
make_error_code(std::future_errc) (C++11)	constructs a future error code (function)[edit]

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